Finding the Fourth Proportional to 15,629,634.18, 21,568,873.96 and 8,660,763.09
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Solution
The fourth proportional to 15,629,634.18, 21,568,873.96 and 8,660,763.09 is: 11,951,841.31
Step by Step Solution
- Step 1: Write the proportion equation
15,629,634.18 : 21,568,873.96 = 8,660,763.09 : x - Step 2: Convert to fraction form
15,629,634.18/21,568,873.96 = 8,660,763.09/x - Step 3: Cross multiply
15,629,634.18x = 21,568,873.96 × 8,660,763.09 - Step 4: Simplify right side
15,629,634.18x = 186,802,907,485,630.16 - Step 5: Solve for x
x = 186,802,907,485,630.16/15,629,634.18 - Step 6: Final answer
x = 11,951,841.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.